San Joaquin River - San Joaquin Harbor Weather Forecast

    • 68
    • 90

    Mostly Sunny

    • 66
    • 95

    Partly Sunny

    • 68
    • 93

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 65
    • 87

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

Today 20 Aug East Bay Interior Valleys

Sunny. Highs in the mid 90s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 20 Aug East Bay Interior Valleys

Clear. Lows in the lower 60s. Southwest Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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San Joaquin River - San Joaquin Harbor Temperature Statistics

August Temperature

Concord, Buchanan Field (15.5 miles)

  • Lowest 2 August, 2025

    56.6 °F

  • Average August

    71.7 °F

  • Highest 8 August, 2025

    99.6 °F

Climate (2020–Present)

Concord, Buchanan Field (15.5 miles)

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  • Average Low 2020–2025

    50.7 °F

  • Average 2020–2025

    61.3 °F

  • Average High 2020–2025

    74.6 °F
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